Answer:
[tex]D\text{ : Coal}[/tex]Explanation:
Fossil fuels are remains of dead organic materials (plants and animals) buried inside the earth's crust for a long number of years.
They are reliable energy sources
Coal is a form of fossil fuel, petroleum is a form of fossil fuel too. However, petroleum is drilled to bring it out of the earth while coal is mined
The correct answer choice here is thus coal
